Improvement in wrenches



MPETERS, PHOTOAUTMQGRAPHER. WASHINGYON, D c.

ELIAS Banen, or Tirusvittn;rnfNsYLvANIA.

Leners ram 'Nei-12am, dma February 2s, 1871'.

`IMPROVEMENT IN WRENCHES.

The Schedule referred to in these Letters Patentand making part of thesame.

I, ELIAS'BEAG'E, of Titusville, in the county of Crawford and State ofPennsylvania, have .invented certain new and useful Improvements inWrenches, ot' whichI the following is a specification.

My invention relates to that class of wrenches in which a movable jaw isoperated by a pivoted lever handle; and

.lt consists inthe combination of an' independent traversing lock-nutwith a screw on the shank oi' the movablel jaw, and an abutment on theshank of' the fixed jaw, for the purpose oi' constituting a lock to the'movable jaw when set, s'o as to hold the wrench to its work by a deviceindependent of'the operating lever.

l Jn the accompanying drawing- Figure 1 represents an elevation of awrench, showing the movable jawV clamped inv position by the independent`traversing lock-nut.

Figure 2 represents a similar view, showing the operating lever thrownont ofY gear with the movable Jaw.

lhe'movable jaw A of the wrench is made to slide upon the shank B of thetixed jaw C, so as to bite the nut or article to be turned in the usualmanner.

The shaukD of the movable jaw has cogs or teeth, a, on its side next tothe fixed shank, -into which matcircogs, b, on the pivoted end ofthelever -handle E, by lwhich the movable jaw isV operated so as to openand close it with the iixed jaw by simply .turningthe handle E upon itspivot c, which passes through ears d on the rear end of the 'fixed'shank.

lhe shank D of the movable jaw A carries a screwstem, F, which moveswith it, and is provided with an independent lock-uut, G, whichtraverses said screw Rand acts against a stop or abutment, H, on therear endof the' fixed shank B, so that as the movable jaw is made tobite upon the nut, it is held up tightly and securely to its work bybringing the lock-nut- G against the abutment H,'so that the tighter thejaws are clamped upon the article, the tighter they may be locked totheir hold.

' The lever handle E moves the adjustable jaw A in eitherdirectionthrough its cogged-connection, when 'turned Within a certain lange ofmotion; but when the handle is broughtto a position at right angles ornearly so to the xed shank, the cogs b of the lever E will beAdisengaged froml those of theshank, and

-thus allow the movable jaw to be adjusted as may be required beforebringing the lever into gear, as Shown in iig. 2.

This feature is of great advantage in applying the wrench, because itenables the lever handle to be in the best position for use with-respectto the sizeof the nut. y y

The movable jaw is under the control ofthe handle E, so as to beoperated by its cogs to either open or close the jaws, and the lock-nutsimply traverses the screw to clamp the'movable jaw against the abutmentofthe iixed jaw.

The locking of ythe movable jaw when clamped to the work is of greatadvantage in holding the wrench to its work, and at the same timeallowing' it to .bite more 'firmly upon its work by the free action ofvthe leverhandle.

By this 'arrangement of the parts, the wrench can be operated in eitherdirection, while obtaining all the advantages of a cogged lever-wrench.

Having thus described my invention,

I claim- In a pivoted cogged lever-wrench, the arrangement' andcombination ofthe fixed abutment H, screw-stem F, ltraveling locking-nutG, rack D, and the fixed and movable jaws C and A, operatingsubstantially as de.

scribed.

-In testimony wliereof I have hereunto signed my name.

ELIAS BEACH.

Witnesses:

A. E. H. J onNsoN, J .-W. HAMILTON J oHNsoN.

